Getting Started with QNX Neutrino - QNX Software Systems

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© 2009, QNX Software Systems GmbH & Co. KG. 5 Resource Managers 189 What is a resource manager? 191 Examples of resource managers 191 Characteristics of resource managers 192 The client’s view 192 Finding the server 193 Finding the process manager 194 Handling directories 195 Union’d filesystems 196 Client summary 198 The resource manager’s view 199 Registering a pathname 199 Handling messages 200 The resource manager library 200 The library really does what we just talked about 202 Behind the scenes at the library 203 Writing a resource manager 204 Data structures 205 Resource manager structure 210 POSIX-layer data structures 219 Handler routines 226 General notes 226 Connect functions notes 228 Alphabetical listing of connect and I/O functions 230 io_chmod() 230 io_chown() 231 io_close_dup() 231 io_close_ocb() 232 io_devctl() 233 io_dup() 234 io_fdinfo() 235 io_link() 235 io_lock() 236 io_lock_ocb() 237 io_lseek() 237 io_mknod() 238 io_mmap() 239 io_mount() 240 io_msg() 240 io_notify() 241 io_open() 242 vi Contents April 30, 2009
© 2009, QNX Software Systems GmbH & Co. KG. io_openfd() 243 io_pathconf() 243 io_read() 244 io_readlink() 245 io_rename() 246 io_shutdown() 247 io_space() 247 io_stat() 248 io_sync() 248 io_unblock() [CONNECT] 249 io_unblock() [I/O] 249 io_unlink() 250 io_unlock_ocb() 251 io_utime() 251 io_write() 252 Examples 252 The basic skeleton of a resource manager 253 A simple io_read() example 255 A simple io_write() example 259 A simple io_devctl() example 263 An io_devctl() example that deals with data 266 Advanced topics 269 Extending the OCB 269 Extending the attributes structure 271 Blocking within the resource manager 272 Returning directory entries 273 Summary 283 A B QNX 4 to Neutrino 285 QNX 4 and Neutrino 287 Similarities 287 Improvements 287 Porting philosophy 291 Message passing considerations 291 Interrupt service routines 301 Summary 302 Calling 911 303 Seeking professional help 305 So you’ve got a problem. . . 305 Training 309 April 30, 2009 Contents vii
Page 1 and 2: QNX Neutrino RTOS Getting Started w
Page 3 and 4: Contents About This Guide xi What y
Page 5: © 2009, QNX Software Systems GmbH
Page 9 and 10: List of Figures A process as a cont
Page 11: About This Guide April 30, 2009 Abo
Page 14 and 15: Typographical conventions © 2009,
Page 17: Foreword to the First Edition by Pe
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Chapter 2 Message Passing In this c
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Message passing and client/server
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Message passing and client/server
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Multiple threads © 2009, QNX Softw
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Using message passing © 2009, QNX
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Pulses © 2009, QNX Software System
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Message passing over a network © 2
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Priority inheritance © 2009, QNX S
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Chapter 3 Clocks, Timers, and Getti
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Using timers © 2009, QNX Software
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Advanced topics © 2009, QNX Softwa
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Chapter 4 Interrupts In this chapte
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Neutrino and interrupts © 2009, QN
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Writing interrupt handlers © 2009,
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TIME TIME Writing interrupt handler
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Summary © 2009, QNX Software Syste
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Appendix B Calling 911 In this appe
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Seeking professional help © 2009,
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Seeking professional help © 2009,
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Appendix C Sample Programs In this
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atoz.c © 2009, QNX Software System
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time1.c © 2009, QNX Software Syste
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tp1.c © 2009, QNX Software Systems
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Index ! /dev/null resource manager
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Getting Started with QNX Neutrino - QNX Software Systems

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